Water heating and circulating apparatus.



No. e7s,|92. Patented lune u, l90l. .1. DE 0. LAFRENIERE. WATER HEATING AND CIRCULATING APPARATUS.

(Application filed-Nov. 28, 1900.) (No Model.) 2 Sheets-Sheet I.

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No. 676,!92. Patgntad lune'll, l90l.

.1. as c. LAFRENzIERE.

WATER HEATING AND BIRCULATING APPARATUS;

(Application filed Nov. 23, 1900. 7 ("0 Model.) 2 Sheets-Sheet 2-.

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. UNITED STATES PATENT OFFICE.

JOSEPH DE o.-LAEREN1ERE, E BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO PEROIVAL w. ELLIOTT, OF SAME PLACE.

WATER HEATING AND CIRCULATING APPARATUS.

SPECIFICATION forming part of Letters Patent N 0. 676,192, dated June 11, 1901.

Original application filed September 15, 1900, Serial No. 30,107. Divided and this application filed November 23, 1900.

Serial No. 37,492. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH DE 0. LAFRE- NIERE, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Water Heating and Circulating Apparatus, of.

The present applicationis a division of that filed by me September 15, 1900, Serial No. 30,107.

The object of the inventionis to eife'ctually preheat the return-Water without disturbing the circulation in a Water fire-box, and this is accomplished by providing a superstructure designed to be heated by the products of combustion which would otherwise pass off to the chimney and be wasted, said superstructure having circuitous passage ways which the return-water must traverse before it reaches the water fire-box, and these passage-ways being separated from that through which the hot water or steam passes out to the heating system, the steam or hot-water outlet being, however, preferably from the lower part of the superstructure, though it may be directly from the uppermost part of the water fire-box.

,The drawings which accompany and form part of this specification illustrate a preferred form of embodiment of the invention and of said drawings.

Figures 1 and 2 represent the superstructure in cross-section, one view being taken at right angles to the other and the water firebox being shown in elevation. Figs. 3, 4, and 5 represent the members of the superstructure in horizontal section.

The superstructure for heating the returnwater from the system comprises a tier of hollow disks, the lower one, 10, of which is formed with bosses 11 at opposite sides, receivingnipples 12, which depend within the water fire-box and which may or may not be of the construction shown in my said appli cation of September 15, 1900. This disk has'a boss 13 on its top at one side, receiving the lower end of a pipe 14,which opensinto the upper part of the disk above the nipple 12 and constitutes the outtake-conduit for the hot Water. A partition 15 is provided within the disk 10 in the form of a web, extending from near the front to near the rear, lateral wings 16 being provided for strengthening purposes. This partition serves the purpose of preventing such commingling of the returnwater entering 'the disk with the heated water flowing therefromto the pipe 14 as might otherwise be calculated to disturb the'circulation. At the same time any water attaining the degree of heat of the upward-moving column is free to join the latter in the disk. Two hollow disks 17 and 18 are shown surmounting the disk 10, each being of practically the same formation interiorly and er;- teriorly. In each there is formed a partition 'ordefiector 19, springing from one side and extending obliquely toward the center and thence diametrically across the latter, terminating short of the opposite side of the disk, as clearly shown in Figs. 3 and 4. Wings 20 extend from the frontand back of this diametrical portion of the partition, the front wing being somewhat longer than the rear one. Alining sleeves 21 are formed in these upper disks, and the pipe 14 extends through said sleeves to join the piping'of the heating system. At the opposite side the middle disk 17 is formed with a boss 22 on the bottom, coming directly over a boss 234m the disk 10, and a short pipe-section or nipple 24 fits in said bosses and provides communication for return-water between the two disks, said nipple opening into the middle disk in rear of its partition or deflector 10, so that the returnwater must reach said nipple behind said par tition. A boss 25 is formed on top of said disk 17 to receive a nipple 26 forward of said partition 19, and the top disk 18 has a cone sponding boss 27 on its bottom to receive said nipple, which provides communication between the disks 17 and 18 for the return-water. It will be seen that the latter enters the disk 17 in front of the partition and must arrows in Fig. 4:, wherein the nipple 2 6 is inr.

dicated by dotted lines. The reference-numeral 28 designates the return-pipe from the heating system, which pipe enters the top of the disk 18 in the rear of the partition 19, so that the water must flow entirely around the interior of the disk before it finds an outlet at the nipple 26. are concave, and the disks are sufficiently separated to provide heating-chambers 29:, throu-gliwhich products of combustion-pass to the chimney.

fire box, chamber to, the chamber between is. disk and the disk 17, and the latter has. a smoke-flue 31- at e front, lead ng f om. aid hamber to the chamber between the isks, IT and 18,, and the latter has a smokeflueizat, the rear, leading to thechimney-fiue It, will be, seen that by this arrangement, the! Ll-IQQ disks, are thoroughly subjected to he heat ofi the. products of combustion passing upward; from the fire-box and that the return-water will; be effiectively heated before.

I eaching the tubes.

The disks: 1.73 and 1.8 are. supported at one de, by the connecting nipples and bosses and at. the opposite sideby gs 3 ormed. upon e Element of? these. disks, an r sting onth disk below- T c. heating-chambe s are closed atthe sides. by flanged bands'35, havs clean-out openings with doors, as, shown atiti in. Big. T e. disks are. lamped o..- gcther by means of lugs 39, formed upon em, and bolts. and nuts. engag g he. lugs 1t w l b se n that the construction herein.

d erted s W l calculated to 0rQughl-yfu1 4 "e object primarily stated.- Having. h sc pla ed the nature of the invent on and escri d a way f constructing and using the same, though without attempt ing to set forth all the forms in which it may bejmadje or all the modes of its use, it is deated. thatwhat is la med isl. Ina heater of the character described, the combination with a water fire-box; of .a retnrn water-heating structure surmounting said fires-box and comprising a number of s,u-,

perposed communicating hollow disks with passages-ways between them for products of combustion, lower one of which disks communicates at Oppos e s des w th the. top part, of; the Water fire-box; an outtake-pipe in direct communication with said lower disk; and areturn-water pipe entering the uppermostholl ow disk; all of the disks being in f.

communication for the circulation of the return-water while the outflow of heated Water is only from the lowermost disk, substandaily as escribed.

2; In a heater of the character described,

' the combination with: a water fire-box; of a return-water-heating structure surmounting said fire-box and comprisinga, number of super-posed hollow disks with passage-ways be- The bottoms of the disks The lower disk 10 hasa; smoke-flue 30 at the rear, leading from the. r

tween them for products of combustion, the lowermost one of which disks communicates at. opposite sides with the top part of the firebox, allof the disks communicating with each other at the same side and ,the upper ones having deflectors for causing the return-water to traverse their interiors; an outtakepipe in direct communication with the lower- 1 most disk at one side thereof; and a returnwater pipe entering the uppermost disk; all of the disks being in communication for the i circulation of the return-water while the outflow of heatedwater is only from the lowermost, disk, substantially as described.

3. In aheater of the character described, the combination with a Water fire-box; of a I return-water-heating structure surmounting l said fire-box and comprising a number 0t su- Eperposed communicating hollow disks with j passageways between them for products of ;c,ombus tion, the lower one of which disks communicates at opposite sides with the top fpart of the water fire-box; an outtake-pipe Heading from said lower disk and extending jup through thedisks thereabove; and a re.- 1 turn-water pipe opening into the uppermost hollow disk.

4. In a heater of the character described, the combination with a water fire-box; of a lreturn water-heating structure surmounting said fire-box and comprising a number of superposed communicating hollow disks with fipassage-ways between them forthe products of combustion, the lower one of which disks gcommunicates at opposite sides with the top part of the Water fire-box and has a partition extending partially across its-i'nte-riorbetween 5 said points of communication with the water ifire-box; an outtake-pipe leading from said lower disk and a return-water pipe opening finto the uppermost'hollow diskf I 5; In a heater of the character described, itl'le' combination with a water-fire-bo-xg-of. aj superstructure for heating return-water, the samecomprising one or more hollow disks, 1 each with offset inlet and outlet ports in, top 1 and bottom respectively and a vertical partition or deflector extending from top to bot- ;tom between them to cause water entering fthe disk to travel around the same; before passing out; a lower diskin communication,

the uppermost disk.

6. In a heater of the character-described, the combination with a water fire-box; of a Treturn-water-heating structure surmounting said fire-box and comprising a number of suiperposed communicating hollow disks with passage-ways between them for products of combustion, thelower one of which disks communicates with the top part of the waterfireibox atone side thereof; a return-water pipe 1 entering the uppermost hollow disk, the com= {turn-water pipe leading into the inlet-port of munication between the disks providing for and bottom respectively, and a vertical parti-.

tion or deflector extending from top to bottom between them to cause water entering the disk to travel around the same before passing out; a return-water pipe leading into the inlet-port of the uppermost disk; a lower disk in communication with the outlet from 20 the next disk above and also in communication with the top part of the water fire-box at one side thereof; and an outtake-pipe arranged to receive and carry off the heated water as it comes from the top of the fire-box 25 at the side opposite that where the lower disk discharges return-water into said fire-box, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence of 30 two subscribing witnesses, this 21st day of No- Vemberg'A. D. 1900.

JOSEPH DE 0. LAFRENIERE. \Vitnesses:

F. P. DAVIS, HORACE BROWN. 

